Phospho-EFNB1/EFNB2/EFNB3 (Y324) Antibody

Antibody Characteristics

Biological Role of Tyr324 Phosphorylation

Phosphorylation at Tyr324 is critical for regulating Ephrin-B protein interactions with Eph receptors, which mediate cell signaling pathways involved in:

• Axon guidance and neuronal development .

• Cell adhesion and migration during tissue morphogenesis .

• Viral entry, as Ephrin-B2 (EFNB2) serves as a receptor for Nipah and Hendra viruses .

This modification enhances Ephrin-B receptor binding specificity, enabling precise signaling during development and immune responses .

Western Blot

• Detects phosphorylated Ephrin-B proteins in lysates (e.g., K562 cells treated with serum) .

• Recommended dilutions: 1:500–1:2000 .

Immunohistochemistry

• Stains phosphorylated Ephrin-B in paraffin-embedded tissues (e.g., human brain) .

• Dilutions: 1:100–1:300 .

ELISA

• Quantifies phosphorylated Ephrin-B levels in cell lysates or biological fluids .

• Dilution: 1:20,000 .

Key Research Findings

1. Viral Entry Mechanisms

   • EFNB2 phosphorylation at Tyr324 enhances binding to Nipah virus G glycoprotein, facilitating viral entry .

   • Engineered soluble Ephrin-B2 decoys (e.g., sEFNB2-Fc) inhibit henipavirus infection by competing for viral attachment .

2. Immune Cell Development

   • Ephrin-B1 marks mature germinal center B cells during immune responses, distinguishing them from transitional populations .

   • Phosphorylation at Tyr324 correlates with Ephrin-B1 expression in plasma cells and memory B cells .

3. Cancer Research

   • Dysregulated Ephrin-B signaling is implicated in tumor progression and metastasis, making Tyr324 phosphorylation a potential therapeutic target .

Therapeutic Implications

The antibody’s specificity for phosphorylated Ephrin-B proteins supports research into:

• Antiviral therapies: Engineering Ephrin-B decoys to block viral entry .

• Cancer treatments: Targeting Ephrin-B signaling pathways to inhibit tumor growth .

• Neurological disorders: Investigating Ephrin-B phosphorylation in neurodegenerative diseases .